Mission Operations Days: 2003/340 to 2003/346
December 06, 2003 00:00:00 GMT to December 12, 2003 00:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
| AM-1 "Terra" is in Normal Mode PFM MODIS is in A-Side Nominal Science Mode (Cross Strapped with FR B) |
||
|---|---|---|
| Component | State(s) | Comment |
| Blackbody | A On (290K); B Off | Nominal Science Mode |
| Calibration Electronics | A On; B Off | Nominal Science Mode |
| Control Processor | A On; B Off | Nominal Science Mode |
| Nadir Door | Unlatched, Open | Nominal Science Mode |
| Space View Door | Unlatched, Open | Nominal Science Mode |
| Solar Diffuser Door | Unlatched, Screened | Permanent Configuration |
| FDDI Formatter | A On; B Off | Nominal Science Mode |
| FDDI Port | A On; B Off | Nominal Science Mode |
| FIFO Memory | #1 & #2 On; #3 & #4 Off | Nominal Science Mode |
| Format Processor | A Off; B On | Nominal Science Mode |
| Power Supplies | #1 On, #2 Off | Nominal Science Mode |
| PV VIS FPA | A On; B Off | Nominal Science Mode |
| PV NIR FPA | A On; B Off | Nominal Science Mode |
| PV SMIR FPA | A On; B Off | Nominal Science Mode |
| PV LWIR FPA | A On; B Off | Nominal Science Mode |
| PC LWIR FPA | A On; B Off | Nominal Science Mode |
| RC Outgas Heaters | All 3 (CS, IS, OS) Off | Nominal Science Mode |
| RC LWIR FPA Heater | On (83K) | Nominal Science Mode |
| RC SMIR FPA Heater | Off | Nominal Science Mode |
| Scan Assembly | A On; B Off | Nominal Science Mode |
| SDSM | Off | Nominal Science Mode |
| SRCA | Off | Nominal Science Mode |
| PS1 Survival Heater | Enabled | Nominal Science Mode |
| PS2 Survival Heater | Enabled | Nominal Science Mode |
| Timing Generator | A On; B Off | Nominal Science Mode |
| Flight Software | Rev BD + 11 sets of patches
|
Nominal Science Mode |
| Inhibit Ids Set | none | Nominal Science Mode |
| TMON 66 | Disabled | Nominal Science Mode |
| TMON 67 | Disabled | Nominal Science Mode |
| TMON 68 | Enabled | Nominal Science Mode |
| TMON 69 | Disabled | Nominal Science Mode |
This Week’s Completed MODIS Activities:
Saturday, December 6, 2003
None
Sunday, December 7, 2003
None
Monday, December 8, 2003
None
Tuesday, December 9, 2003
2003/343 20:26:58-20:35:46 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM screened side A, no door movement
2003/343 21:16:26-21:37:21 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2 OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1 Data collection is from 21:32:20-21:37:21 (in S/C Night)
Wednesday, December 10, 2003
None
Thursday, December 11, 2003
None
Friday, December 12, 2003
None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Saturday, December 13, 2003
PFM Lunar Calibration via spacecraft roll maneuver (-6.4083 degrees)
2003/347 16:52:40 ATC MOD_OA03_FR_DAY_RATE
2003/347 ??:??:?? Real-Time Terra FOT commands S/C to low-fidelity pointing
2003/347 17:38:45 ATC MOD_OA03_FR_NIGHT_RATE (03:23 early)
2003/347 18:12:33-18:19:19 ATC MOD_OA08_ROLL_MAN
2003/347 ??:??:?? Real-Time Terra FOT commands S/C to high-fidelity pointing
2003/347 18:34:56 ATC MOD_OA03_FR_DAY_RATE (03:23 late)
2003/347 19:21:01 ATC MOD_OA03_FR_NIGHT_RATE
Maneuvers:
The next Lunar Calibration will occur on DOY 2003/347 (December 13, 2003), with a roll angle of -6.4083 degrees and a data collect time from 18:12:41 to 18:19:11.
MODIS Anomalies:
Terra SSR Anomaly:
Although not directly the result of a MODIS problem, the most recent Printed Wire Assembly (PWA) failures in the Terra Solid State Recorder (SSR) do affect MODIS data. See the Non-MODIS Significant Events section below for more details.
Terra SFE Anomaly:
Although not directly the result of a MODIS problem, the SFE anomaly is causing an unrecoverable loss of all current MODIS Direct Broadcast data. Normal science data recording and playbacks are functioning properly. See the Non-MODIS Significant Events section below for more details.
General Instrument Comments:
MODIS is in Science Mode, using all A-side components, but cross-strapped to Formatter B, with the blackbody maintained at 290K and the Solar Diffuser Door at the Screened position.
MODIS Telemetry Trends:
Nominal telemetry trending is ongoing.
Non-MODIS Significant Events:
Terra Solid State Recorder Anomaly
Overview:
The SSR Anomaly is still under investigation. MODIS currently is operating with 34 Supersets allotted for its buffer. There are plans in the works for possibly power cycling the SSR to get back PWA’s that are in the Bad List, but no date has yet been set. There are no current plans for a change in science data capture rates. For details, see previous reports.
Terra SFE Anomaly
Overview:
The SFE-A on Terra is corrupting every fourth byte of data it produces for the DAS-1 feed to the Direct Broadcast equipment. The anomaly is currently under investigation and diagnosis. For details, see previous reports.
Additional Information:
The recycle of the SFE-A is planned for sometime after Tuesday, December 16, 2003 (DOY 2003/350) at 20:00:00 GMT, if approval comes through from NASA headquarters. There will be a data loss for all instruments for about 15 minutes. The plan will be for a recycle during the time ASTER is not imaging.
The EMOS mission status webpage (which includes instrument data loss records) can be found at the following URL. Note that a password is now required to access the EOS mission links web pages. There are directions at the URL below for how to obtain a username/password.
http://jupiter02.gsfc.nasa.gov/links/links.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 222.7 of 500 hours
SRCA 10W Lamp #2: 163.5 of 500 hours
SRCA 10W Lamp #3: 172.7 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 564.9 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements